import axios from 'axios'
import {Message} from 'element-ui';

// 请求拦截器
axios.interceptors.request.use(config => {
    // 如果存在token, 就在请求头中设置这个token
    if (window.sessionStorage.getItem("tokenStr")) {
        config.headers['Authorization'] = window.sessionStorage.getItem("tokenStr");
    }
    return config;
}, error => {
    console.log(error);
});


//响应拦截器
axios.interceptors.response.use(success => {
    console.log("执行拦截器.....");
    //业务逻辑错误
    if (success.status && success.status === 200) {
        if (success.data.code === 500 || success.data.code === 401 || success.data.code === 403) {
            Message.error({message: success.data.message});
            return;
        }
        if (success.data.message) {
            Message.success({message: success.data.message});
        }
    }
    return success.data;
}, error => {
    if (error.response.code === 504 || error.response.code === 404) {
        console.log(error.response.code);
        Message.error({message: '服务器被吃了o(╯□╰)o'});
    } else if (error.response.code === 403) {
        console.log(error.response.code);
        Message.error({message: '权限不足，请联系管理员！'});
    } else if (error.response.code === 401) {
        Message.error({message: '尚未登录，请登录'});
        //router.replace('/');
    } else {
        if (error.response.data.message) {
            Message.error({message: error.response.data.message});
        } else {
            Message.error({message: '未知错误！'});
        }
    }
    return;
});

let base = '/api/';

/**
 * 传送json格式的post请求
 * @param url
 * @param params
 * @returns {AxiosPromise}
 */
export const postRequest = (url, params) => {
    return axios({
        method: 'post',
        url: `${base}${url}`,
        data: params,
        headers: {
            'Content-Type': 'application/json'
        }
    })
};


/**
 * get请求, 参数外面有个 params "包裹"
 *  例子:
 *      params: {
 *        name: "zhangsan",
 *        password: "123"
 *      }
 *  实际url是
 *      http://localhost:8080/api/testGetRequest?name=zhangsan&password=123
 *
 * @param url
 * @param params
 * @returns {AxiosPromise}
 */
export const getRequest = (url, params) => {
  return axios({
    method: 'get',
    url: `${base}${url}`,
    params: params              // 注意这里与post方法不同, 实际上是将参数 以 & 拼接在url后面.
  });
};

/**
 * 文件上传请求
 * @param url
 * @param params
 * @returns {AxiosPromise}
 */
export const uploadFileRequest = (url, params) => {
    return axios({
       method: 'post',
       url: `${base}${url}`,
       data: params,
       headers: {
           'Content-Type': 'multipart/form-data'
       }
    });
};



